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Fred Thomas Fred Thomas
Fred C Thomas III, Glenn B Dixon, Todd R Shelton, Todd L Graves, Allen T Bracken: Latent illuminance discrimination marker system for data storage cartridges. Iomega Corporation, Woodcock Washburn, March 19, 2002: US06359745 (11 worldwide citation)

A data storage cartridge for a data storage disk drive has a latent illuminance marker. A light source illuminates the marker and the marker emits illuminance as phosphorescence. A photosensor detects the emitted illuminance, and the decay time is determined. The decay time is checked to provide ide ...


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Fred Thomas
Allen T Bracken, Doug Mayne, Jay Muse, Brian Schick, Fred Thomas III: Data storage drive and cartridge having alignment openings for cartridge mounting and ejection. Iomega Corporation, Woodcock Washburn Kurtz Mackiewicz & Norris, August 24, 1999: US05943185 (4 worldwide citation)

A disk insertion and ejection mechanism for use in a mini disk drive. The insertion and ejection mechanism operates by using cooperating cammed surfaces on a mini-cartridge and a movable sled within the mini disk drive. The cams operate to keep the mini-cartridge raised above the drive spindle durin ...


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David Griffith, David Jones, Allen T Bracken, Theon Rawlings: Drawer loading removable cartridge disk drive. Iomega Corporation, Woodcock Washburn Kurtz Mackiewicz & Norris, June 1, 1993: US05216558 (48 worldwide citation)

In a disk drive the drive motor and actuator are mounted in a drawer which is slidable to an open position in which there is no vertical obstruction over the motor. The removable cartridge can be placed on the motor with the motor extending into the cartridge to engage the hub. A shutter in an edge ...


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Wayne A Sumner, Allen T Bracken, David W Griffith, David E Jones, Edward L Rich: Disk drive cartridge door. Iomega Corporation, Woodcock Washburn Kurtz Mackiewicz & Norris, October 29, 1996: US05570252 (45 worldwide citation)

A cartridge for a magnetic disk drive has a rigid shell and a flexible door which covers an opening through which read/write heads engage the recording medium. The flexible door is guided outside of the shell to an open position as the cartridge is inserted into the drive. A projection on a flexible ...


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Allen T Bracken, Harold A Lunka, William J Benker, Howard A Snyder, Gary W Collins: Air shroud for data storage disks. Storage Technology Partners II, April 15, 1986: US04583213 (40 worldwide citation)

An air shroud is disclosed for reducing vibration of the disk storage medium and controlling contamination in the environment above the disk in an optical disk data recording system. The shroud is placed over the rotating disk and pressurized air is forced into the center of the air space between th ...


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Wayne A Sumner, Allen T Bracken, David W Griffith, David E Jones, Edward L Rich: Disk drive cartridge door. Iomega Corporation, Woodcock Washburn Kurtz Mackiewicz & Norris, September 23, 1997: US05671109 (25 worldwide citation)

A cartridge for a magnetic disk drive has a rigid shell and a flexible door which covers an opening through which read/write heads engage the recording medium. The flexible door is guided outside of the shell to an open position as the cartridge is inserted into the drive. A projection on a flexible ...


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Weimin Pan, Allen T Bracken, John R Stokes: Off-track write protection method and system for induced mechanical disturbance on a disk drive. Iomega Corporation, Woodcock Washburn Kurtz Mackiewicz & Norris, January 23, 2001: US06178058 (20 worldwide citation)

A method and apparatus for protecting a disk from overwrites during mechanical shock. If the PES exceeds an off-track threshold for a predetermined number of servo samples, the read/write is suspended for a predetermined duration. The predetermined duration allows for the mechanical shock or disturb ...


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Randall C Bauck, Allen T Bracken, Thomas A Wilke, David S Greenhalgh: Method and apparatus for making a drive compatible with a removable cartridge. Iomega Corporation, James T Hagler, April 6, 2004: US06717762 (16 worldwide citation)

An information storage device includes a cradle which can removably receive a cartridge that contains a rotatable hard disk. A read/write head is supported for movement adjacent the disk by a pivotal actuator arm. The cradle controls alignment of the head with the disk using feedback servo tracking. ...



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